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Influence of homogenization treatment on the degradation behavior of Zn-3Mg alloy in simulated body fluid solution

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Authors
Dambatta, M.
Kurniawan, Denni
Sudin, I.
Yahaya, B.
Hermawan, H.
Date
2016
Type
Journal Article

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Dambatta, M. and Kurniawan, D. and Sudin, I. and Yahaya, B. and Hermawan, H. 2016. Influence of homogenization treatment on the degradation behavior of Zn-3Mg alloy in simulated body fluid solution. Proceedings of the Institution of Mechanical Engineers, Part L: Journal of Materials: Design and Applications. 230 (2): pp. 615-619.
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Proceedings of the Institution of Mechanical Engineers, Part L: Journal of Materials: Design and Applications
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Curtin Malaysia
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Abstract

This paper reports a degradation study of Zn-(3 wt%) Mg alloy proposed for biodegradable medical implants. The alloy was cast from high-purity raw materials and homogenized at 370 ° C for 15 h under vacuum and water quenched. The effect of homogenization on microstructure and degradation behavior in simulated body fluid was investigated. Results showed that homogenization transformed the star-like dendritic Zn-rich shape into a network of precipitate phase along eutectic colony and dispersed M g2 zn 11 phase. The homogenized alloy showed higher degradation resistance compared to the as-cast alloy, pure Zn, and pure Mg samples. The relationship between microstructure and degradation behavior discussed further in this paper.